import CryptoJS from 'crypto-js';
const key = CryptoJS.enc.Utf8.parse("4A2F3121E3FE3242");  //十六位十六进制数作为密钥
const iv = CryptoJS.enc.Utf8.parse('3B24FF22C2DF12A1');   //十六位十六进制数作为密钥偏移量

function randomHexKey() {
  let str = '1234123412ABCDEF'
  let str1 = ''
  let str2 = ''
  for (let i = 0; i < 16; i++) {
    let random1 = Math.floor(Math.random() * 16)
    str1 += str[random1]
    let random2 = Math.floor(Math.random() * 16)
    str2 += str[random2]
  }
  console.log(str1, str2)
}

/**crypto加密 */
function Encrypt(word: string) {
  let srcs = CryptoJS.enc.Utf8.parse(word);
  let encrypted = CryptoJS.AES.encrypt(srcs, key, { iv: iv, mode: CryptoJS.mode.CBC, padding: CryptoJS.pad.Pkcs7 });
  return encrypted.ciphertext.toString().toUpperCase();
}

/**crypto解密 */
function Decrypt(word: string) {
  let encryptedHexStr = CryptoJS.enc.Hex.parse(word);
  let srcs = CryptoJS.enc.Base64.stringify(encryptedHexStr);
  let decrypt = CryptoJS.AES.decrypt(srcs, key, { iv: iv, mode: CryptoJS.mode.CBC, padding: CryptoJS.pad.Pkcs7 });
  let decryptedStr = decrypt.toString(CryptoJS.enc.Utf8);
  return decryptedStr.toString();
}

const desKey = CryptoJS.enc.Utf8.parse("11");

//DES加密方法
function desEncrypt(message: string) {
  let encrypted = CryptoJS.DES.encrypt(message, desKey, {
    mode: CryptoJS.mode.ECB,
    padding: CryptoJS.pad.Pkcs7
  });
  return encrypted.toString();
}
//DES解密方法
function desDecrypt(ciphertext: string) {
  if (ciphertext === "" || ciphertext === null || ciphertext === undefined) {
    return "";
  }
  if (typeof (ciphertext) != "string") {
    ciphertext = JSON.stringify(ciphertext);
  }
  //@ts-ignore
  var decrypted = CryptoJS.DES.decrypt({
    ciphertext: CryptoJS.enc.Base64.parse(ciphertext)
  }, desKey, {
    mode: CryptoJS.mode.ECB,
    padding: CryptoJS.pad.Pkcs7
  });
  return decrypted.toString(CryptoJS.enc.Utf8);
}



function sha256Encrypt(data: string) {
  return CryptoJS.SHA256(data).toString()
}
const crypto = {
  Encrypt,
  Decrypt,
  desEncrypt,
  desDecrypt,
  sha256Encrypt
}
export default crypto

